Device and process for checking sheet articles such as bank notes or
securities
    1.
    发明授权
    Device and process for checking sheet articles such as bank notes or securities 失效
    检查纸质文章(如纸币或证券)的设备和流程

    公开(公告)号:US6061121A

    公开(公告)日:2000-05-09

    申请号:US945796

    申请日:1997-11-10

    摘要: An apparatus for testing sheet material includes an illumination device which illuminates the sheet material continually and in the total spectral region to be tested, and a receiving device having at least two linear parallel CCD arrays. A filter transmitting a certain spectral region is mounted on each CCD array. The individual filters are selected so that at least one transmits in the visible spectral region and one in the invisible spectral region. For detection of the light diffusely reflected or transmitted by the sheet material, the individual CCD arrays produce electric signals from the received light which are then processed in an evaluation device and compared with reference data for testing the sheet material.

    摘要翻译: PCT No.PCT / EP96 / 01966。 371日期1998年2月19日 102(e)1998年2月19日PCT PCT 1996年5月9日PCT公布。 第WO96 / 36021号公报 日期:1996年11月14日。片材材料的测试装置包括连续照射片材和要测试的总光谱区域的照明装置和具有至少两个直线平行CCD阵列的接收装置。 传输特定光谱区域的滤光片安装在每个CCD阵列上。 选择各个滤波器,使得至少一个滤波器在可见光谱区域和不可见光谱区域中的一个发射。 为了检测由片状材料漫反射或透射的光,各CCD阵列从接收的光产生电信号,然后在评估装置中进行处理,并与用于测试片材的参考数据进行比较。